Cross-site scripting (XSS) vulnerability in the Block Class module 7.x-2.x before 7.x-2.2 for Drupal allows remote authenticated users with the "Administer block classes" permission to inject arbitrary web script or HTML via a class name.

Cross-site scripting (XSS) vulnerability in the Recent Comments module 5.x through 5.x-1.2 and 6.x through 6.x-1.0 for Drupal allows remote authenticated users to inject arbitrary web script or HTML via a "custom block title interface."

Cross-site scripting (XSS) vulnerability in block_class.module in the Block Class module before 7.x-1.1 for Drupal allows remote authenticated users with certain permissions to inject arbitrary web script or HTML via the class name.

Cross-site scripting (XSS) vulnerability in the Read More Link module 6.x-3.x before 6.x-3.1 for Drupal allows remote authenticated users with the access administration pages permission to inject arbitrary web script or HTML via unspecified vectors.